{"slug":"lifetime-wealth","title":"Lifetime wealth","definition":"Studies of how early household and career choices compound into later wealth.","connected_topics":[{"slug":"cohabitation","title":"Cohabitation","href":"https://greyscienx.com/topics/cohabitation"},{"slug":"inheritance","title":"Inheritance","href":"https://greyscienx.com/topics/inheritance"},{"slug":"housing","title":"Housing","href":"https://greyscienx.com/topics/housing"}],"study_count":4,"studies":[{"id":"GSX:HH-001","slug":"economics-of-living-together","title":"The Economics of Living Together","primary_question":"How do early cohabitation, delayed cohabitation, and separate households compare in a Gauteng lifetime scenario?","summary":"A Gauteng lifetime scenario comparing early cohabitation, delayed cohabitation and separate households.","research_type":"exploratory_simulation","evidence_status":"modelled","series_slug":"household-economics","series_title":"Household Economics","version":"1.0","date_modified":"2026-09-28","links":{"html":"https://greyscienx.com/research/household-economics/economics-of-living-together","markdown":"https://greyscienx.com/research/household-economics/economics-of-living-together/markdown","manuscript":"https://greyscienx.com/api/v1/research/economics-of-living-together/manuscript","json":"https://greyscienx.com/api/v1/research/economics-of-living-together","pdf":"https://greyscienx.com/research/household-economics/greyscienx-economics-of-living-together.pdf"}},{"id":"GSX:HH-002","slug":"the-first-three-years-advantage","title":"The First Three Years Advantage","primary_question":"How can delaying rent and car ownership at the start of a career alter lifetime wealth?","summary":"How delaying rent and car ownership at the start of a career can alter lifetime wealth.","research_type":"exploratory_simulation","evidence_status":"modelled","series_slug":"household-economics","series_title":"Household Economics","version":"1.0","date_modified":"2026-09-28","links":{"html":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage","markdown":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage/markdown","manuscript":"https://greyscienx.com/api/v1/research/the-first-three-years-advantage/manuscript","json":"https://greyscienx.com/api/v1/research/the-first-three-years-advantage","pdf":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage.pdf"}},{"id":"GSX:POP-008","slug":"inheritance-after-retirement","title":"Inheritance After Retirement","primary_question":"What is the economic difference when inheritance arrives at 40, 55, 70, or 85?","summary":"The economic value of inheritance arriving at 40, 55, 70 or 85.","research_type":"exploratory_simulation","evidence_status":"modelled","series_slug":"population-futures","series_title":"Population Futures","version":"1.0","date_modified":"2026-09-28","links":{"html":"https://greyscienx.com/research/population-futures/inheritance-after-retirement","markdown":"https://greyscienx.com/research/population-futures/inheritance-after-retirement/markdown","manuscript":"https://greyscienx.com/api/v1/research/inheritance-after-retirement/manuscript","json":"https://greyscienx.com/api/v1/research/inheritance-after-retirement","pdf":"https://greyscienx.com/research/population-futures/inheritance-after-retirement.pdf"}},{"id":"GSX:WPL-001","slug":"inherited-geography","title":"Inherited Geography","primary_question":"How does South Africa's unequal property geography continue to compound into differences in wealth?","summary":"How South Africa’s unequal property geography continues to compound into differences in wealth.","research_type":"exploratory_simulation","evidence_status":"modelled","series_slug":"wealth-and-place","series_title":"Wealth and Place","version":"1.0","date_modified":"2026-09-28","links":{"html":"https://greyscienx.com/research/wealth-and-place/inherited-geography","markdown":"https://greyscienx.com/research/wealth-and-place/inherited-geography/markdown","manuscript":"https://greyscienx.com/api/v1/research/inherited-geography/manuscript","json":"https://greyscienx.com/api/v1/research/inherited-geography","pdf":"https://greyscienx.com/research/wealth-and-place/inherited-geography-racial-property-wealth-dividend.pdf"}}],"related_questions":["What is the lifetime household comparison between living together and maintaining separate households?","How does the timing of cohabitation change the cost of living and saving?","How does living with parents during the first years of employment compare with paying rent for a separate household?","What is the lifetime wealth comparison between delaying car ownership and buying a car at first employment?","How does the age at which inheritance arrives change its economic value?","What happens to inheritance when retirement and longer lives move bequests later?","How does inherited property geography relate to South Africa's racial wealth gap?","How do the type, location, and tenure of inherited property carry advantage across generations?"],"claims":[{"id":"GSX:HH-001:C01","claim":"For two Gauteng adults bringing home R30,000 and R20,000 a month, combining households at 25 rather than 35 leaves about R3.972 million more combined household wealth at 75 in the average scenario, in constant 2026 rand. The direct living-cost saving is about R1.059 million. The larger gap comes from investing that earlier saving and from avoiding expensive negative balances.","study_id":"GSX:HH-001","study_title":"The Economics of Living Together","href":"https://greyscienx.com/research/household-economics/economics-of-living-together/claims/C01"},{"id":"GSX:HH-002:C01","claim":"In the central middle-salary Johannesburg scenario, living in the family home and delaying a car purchase for three years creates R602,000 more modelled net capital at age 25, and R3.32 million more modelled wealth at age 60, than moving out and financing a car immediately. The age-60 figure holds when the gap is preserved on the manuscript's common post-25 path.","study_id":"GSX:HH-002","study_title":"The First Three Years Advantage","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage/claims/C01"},{"id":"GSX:POP-008:C01","claim":"If R1 million remains invested until age 100 at 4 percent above inflation, a living transfer at 35 becomes R12.80 million, an inheritance at 40 becomes R10.52 million, at 55 R5.84 million, at 70 R3.24 million, and at 85 R1.80 million, in constant 2026 rand.","study_id":"GSX:POP-008","study_title":"Inheritance After Retirement","href":"https://greyscienx.com/research/population-futures/inheritance-after-retirement/claims/C01"},{"id":"GSX:WPL-001:C01","claim":"For matched descendants, the central scenario produces median marketable net worth after forty years of R3.67 million with a titled township home and R5.24 million with a middle-value suburban home. The difference is R1.57 million, in constant 2024 rand.","study_id":"GSX:WPL-001","study_title":"Inherited Geography","href":"https://greyscienx.com/research/wealth-and-place/inherited-geography/claims/C01"}],"assumptions":[{"id":"GSX:POP-008:A02","name":"Average return and starting pay","sensitivity":"high","study_id":"GSX:POP-008","href":"https://greyscienx.com/research/population-futures/inheritance-after-retirement"},{"id":"GSX:HH-001:A03","name":"Average-case returns and costs","sensitivity":"high","study_id":"GSX:HH-001","href":"https://greyscienx.com/research/household-economics/economics-of-living-together"},{"id":"GSX:POP-008:A03","name":"Clean compounding case","sensitivity":"high","study_id":"GSX:POP-008","href":"https://greyscienx.com/research/population-futures/inheritance-after-retirement"},{"id":"GSX:HH-002:A07","name":"Common path after age 25","sensitivity":"high","study_id":"GSX:HH-002","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage"},{"id":"GSX:HH-002:A04","name":"Contribution while living at home","sensitivity":"high","study_id":"GSX:HH-002","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage"},{"id":"GSX:HH-002:A06","name":"Hybrid transport while the car is delayed","sensitivity":"high","study_id":"GSX:HH-002","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage"},{"id":"GSX:HH-002:A03","name":"Johannesburg housing bundle","sensitivity":"high","study_id":"GSX:HH-002","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage"},{"id":"GSX:WPL-001:A01","name":"Matched descendants","sensitivity":"high","study_id":"GSX:WPL-001","href":"https://greyscienx.com/research/wealth-and-place/inherited-geography"}],"datasets":[{"id":"D01","title":"The Economics of Living Together","study_id":"GSX:HH-001","href":"https://greyscienx.com/research/household-economics/economics-of-living-together/data"},{"id":"D01","title":"The First Three Years Advantage","study_id":"GSX:HH-002","href":"https://greyscienx.com/research/household-economics/the-first-three-years-advantage/data"},{"id":"D01","title":"Inheritance After Retirement","study_id":"GSX:POP-008","href":"https://greyscienx.com/research/population-futures/inheritance-after-retirement/data"},{"id":"D01","title":"Inherited Geography","study_id":"GSX:WPL-001","href":"https://greyscienx.com/research/wealth-and-place/inherited-geography/data"}],"links":{"html":"https://greyscienx.com/topics/lifetime-wealth","json":"https://greyscienx.com/api/v1/topics/lifetime-wealth"}}